Consolidated Statements Of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Operating Activities:
Net income	$ 633,045	$ 734,404
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, amortization and impairment expense	193,896	181,028
Gain on sale and retirement of assets	(13,330)	(29,227)
Earnings of non-controlled entities	(116,484)	(122,229)
Distributions from operations of non-controlled entities	152,645	138,140
Equity-based incentive compensation expense	5,580	22,577
Settlement gain, amortization of prior service credit and actuarial loss	3,953	6,748
Debt prepayment costs	12,893	8,270
Changes in operating assets and liabilities:
Trade accounts receivable and other accounts receivable	8,253	(24,954)
Inventory	54,127	(20,217)
Accounts payable	9,040	29,014
Accrued payroll and benefits	(35,226)	(13,599)
Accrued interest payable	(14,775)	(15,060)
Accrued taxes other than income	1,101	10,282
Accrued product liabilities	(11,400)	33,402
Deferred revenue	(17,427)	(13,233)
Other current and noncurrent assets and liabilities	(25,786)	(2,749)
Net cash provided by operating activities	840,105	922,597
Investing Activities:
Additions to property, plant and equipment, net	(371,170)	(718,605)
Proceeds from sale and disposition of assets	334,583	65,574
Investments in non-controlled entities	(73,678)	(158,145)
Distributions from returns of investments in non-controlled entities	0	7,500
Deposits received from undivided joint interest third party	0	68,928
Net cash used by investing activities	(110,265)	(734,748)
Financing Activities:
Distributions paid	(697,264)	(688,635)
Net commercial paper borrowings	248,000	0
Borrowings under long-term notes	499,400	996,405
Payments on long-term notes	(550,000)	(550,000)
Debt placement costs	(4,255)	(12,012)
Net payment on financial derivatives	(10,444)	(33,342)
Payments associated with settlement of equity-based incentive compensation	(14,700)	(9,764)
Debt prepayment costs	(12,893)	(8,270)
Repurchases of common units	251,950	0
Net cash used by financing activities	(794,106)	(305,618)
Change in cash, cash equivalents and restricted cash	(64,266)	(117,769)
Cash, cash equivalents and restricted cash at beginning of period	84,599	309,261
Cash, cash equivalents and restricted cash at end of period	20,333	191,492
Supplemental non-cash investing activities:
Additions to property, plant and equipment	(317,680)	(775,109)
Changes in accounts payable and other current liabilities related to capital expenditures	(53,490)	56,504
Additions to property, plant and equipment, net	$ (371,170)	$ (718,605)